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Adheseal PU15 Polyurethane Adhesive - WhiteVendor:
Adheseal PU15 is a low-modulus polyurethane sealant and adhesive for window perimeter weathersealing, curtain wall interfaces and moving façade joints. Its soft Shore A 15 profile and more than 600% elongation make it a flexible option where aluminium frames, cladding and adjoining materials move...- From $11.99
- From $11.99
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White
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Concrete Grey
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Black
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Adheseal PU25 Polyurethane Adhesive - WhiteVendor:
Adheseal PU25 FC is our fast-curing, medium-modulus polyurethane sealant and adhesive for expansion joints, precast panels, pavement joints and general construction sealing. It accommodates ±25% joint movement and cures to a Shore A 25 flexible seal. Movement joints and perimeter seals Use PU25 FC...
- From $11.12
- From $11.12
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White
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Concrete Grey
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Black
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Adheseal PU50 Polyurethane Sealant - WhiteVendor:
Adheseal PU50 is a high-modulus polyurethane sealant and adhesive for hard-wearing construction joints, anti-pick applications and flexible bonding. Its firm Shore A 45 cured profile, ±25% movement capability and high tear resistance suit joints exposed to frequent contact or demanding site conditions. Durable sealing...
- From $14.96
- From $14.96
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White
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Grey
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Black
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Everflex PU240 Polyurethane Adhesive and Sealant - WhiteVendor:
Everflex PU240 is a fast-curing, single-component polyurethane adhesive and sealant for building maintenance, construction joints and marine repairs. Supplied in a convenient 300 mL cartridge, it creates a tough yet flexible bond or joint seal on suitably prepared construction materials, including masonry, timber, metal...
- From $11.74
- From $11.74
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White
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Grey
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Black
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Adheseal Megaprene 40GG Polyurethane Sealant - Concrete GreyVendor:
Adheseal Megaprene 40GG is a gun-grade polyurethane joint sealant for expansion and connection joints in precast concrete, tilt-up panels, pavement and building perimeters. It cures with atmospheric moisture to form a flexible seal that accommodates ±25% joint movement without the rigidity of a cement-based...
- From $11.33
- From $11.33
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Concrete Grey
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Black
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Open Cell Backing Rod - RoundVendor:
For sealing expansion joints, precast panels, window glazing, and bridge construction, Open Cell Backing Rod - Round acts as a critical bond breaker to prevent three-sided sealant adhesion. Its open-cell structure accelerates sealant curing by allowing the joint to breathe and cure from both...
- From $138.36
- From $138.36
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Open Cell Backing Rod - SquareVendor:
Open Cell Backing Rod – Square is a square-profile, compressible foam backing for rectangular construction and expansion joints. It sits behind a compatible sealant bead to control its thickness and prevent the sealant adhering to the back of the joint, allowing it to move...
- From $3.06
- From $3.06
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Adheseal Backing Rod Closed Cell - RoundVendor:
Adheseal Closed Cell Backing Rod is a round, compressible polyethylene foam used behind silicone, polyurethane, hybrid and acrylic sealants. It controls the depth of a sealant bead and prevents adhesion to the base of a joint, allowing the sealant to flex between the two...
- From $12.30
- From $12.30
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Biyseal Bitumen Impregnated FoamVendor:
Biyseal Bitumen Impregnated Foam is a preformed, compressible polyurethane foam strip for sealing construction joints, metal cladding and roofing details against draughts, dust and moisture. Instead of relying on an adhesive bead, the bitumen-impregnated foam seals by pressing outward against the sides of the...
- From $134.19
- From $134.19
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Biyseal Acrylic Impregnated FoamVendor:
For sealing expansion joints, roof cladding, and window or door perimeters against weather, Biyseal Acrylic Impregnated Foam provides a highly compressible barrier that adapts to continuous joint movement. This high-density polyurethane foam is impregnated with an acrylic solution, allowing it to expand and contract...
- $136.58
- $136.58
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DOWSIL™ 888 Silicone Joint SealantVendor:
DOWSIL 888 Silicone Joint Sealant is a non-sag, low-modulus silicone for movement joints in Portland cement concrete pavements. Designed for new roadworks and pavement repairs, it seals joints against water and debris while accommodating the expansion and contraction of concrete slabs.Where DOWSIL 888 works...- From $19.40
- From $19.40
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DOWSIL™ 890-SL Silicone Joint SealantVendor:
DOWSIL 890-SL Silicone Joint Sealant is a self-levelling, ultra-low-modulus silicone for horizontal pavement joints in concrete and at concrete-to-asphalt interfaces. It flows into uneven joint profiles without tooling and forms a flexible weather-resistant seal as it moisture-cures.Made for horizontal pavement jointsUse 890-SL for new...
- From $31.07
- From $31.07
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Sikaflex®-11 FC+ - WhiteVendor:
Sikaflex-11 FC+ is a one-component polyurethane adhesive and joint sealant for internal and external building work. Designed for flexible, non-structural bonding and sealing, it combines adhesion to compatible construction materials with ±35% movement capability in correctly designed joints. Multipurpose bonding and joint sealing Use...- From $277.80
- From $277.80
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White
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Concrete Grey
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Black
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Sikaflex® PRO - WhiteVendor:
Sikaflex PRO is a one-component, moisture-curing polyurethane sealant for movement and connection joints in concrete and masonry façades. Its ±25% movement capability helps maintain an elastic seal as building joints expand and contract. Supplied in 600ml sausages for use with a compatible foil-pack sealant...
- From $16.48
- From $16.48
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White
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Off White
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Sandstone
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Japan Beige
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Sikaflex® PRO - WhiteVendor:
Sikaflex PRO 310ml Cartridges is a one-component polyurethane joint sealant for concrete and masonry movement joints, façade connections and general building weatherseals. This cartridge format is used with a compatible sealant gun and provides ±25% movement capability and an elastic seal after moisture curing....
- From $241.80
- From $241.80
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White
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Sandstone
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Japan Beige
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Concrete Grey
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Sikaflex® Construction AP+ - WhiteVendor:
Sikaflex Construction AP+ is a one-component, non-sag polyurethane sealant for movement and connection joints in concrete, masonry and other compatible building materials. It accommodates ±25% joint movement to ASTM C 719 and is suited to internal and external façade and building-joint sealing. Where to...
- $311.80
- $311.80
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White
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Concrete Grey
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Black
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Bostik Seal 'N' Flex® FC P577 - WhiteVendor:
Bostik Seal 'N' Flex FC P577 is a one-component, high-modulus, fast-curing polyurethane sealant for construction, movement and trafficable joints. This product is supplied in 600ml sausage format. Bostik's official technical data sheet specifies ±25% movement capability; it is not Seal 'N' Flex One P390.Product...- From $322.60
- From $322.60
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White
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Grey
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Black
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Bostik Seal 'N' Flex® FC P577 - WhiteVendor:
Bostik Seal 'N' Flex FC P577 is a one-component, high-modulus, fast-curing polyurethane sealant for construction, movement and trafficable joints. This product is supplied in 300ml cartridge format. Bostik's official technical data sheet specifies ±25% movement capability; it is not Seal 'N' Flex One P390.Product...
- $355.80
- $355.80
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White
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Grey
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Bostik Seal 'N' Flex® One Plus P590 - WhiteVendor:
Bostik Seal 'N' Flex One Plus P590 is a high-movement polyurethane sealant for expansion and construction joints in precast panels, concrete, masonry and cladding. Its +100%/−50% movement capability and specified joint widths up to 80mm distinguish it from P390. This 300ml cartridge provides the...
- $238.80
- $238.80
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White
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Grey
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Black
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Bostik Seal 'N' Flex® One Plus P590 - WhiteVendor:
Bostik Seal 'N' Flex One Plus P590 is a low-modulus polyurethane sealant for wide, high-movement construction and expansion joints in precast panels, concrete, masonry and cladding. Its +100%/−50% movement capability and suitability for specified joints up to 80mm make it the more demanding-joint option...
- From $322.60
$310.60- From $322.60
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Off White
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Limestone
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Sandstone
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Bostik Fireban® OneVendor:
This product is Bostik Fireban One in Limestone, supplied as a 600ml sausage (Bostik product code 30616836). Fireban One is an intumescent polyurethane sealant for fire-rated construction and movement joints in suitable concrete, masonry and wall-panel assemblies. It provides a flexible, weather-resistant joint seal,...
- From $16.73
- From $16.73
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Gripset Elastoproof B50 Bond Breaker Joint BandVendor:
For wet area tiling, structural joints, and commercial projects where building movement splits liquid membranes, Elastoproof B10 / B50 provides a high-elasticity physical barrier. This approved bondbreaker system conforms to AS 3740, protecting critical wall and floor junctions without the need for sealant backing...- From $51.61
- From $51.61
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RLA Foam FillerVendor:RLARLA Foam Filler is an expanding polyurethane foam for filling non-structural gaps around installed door and window frames, wall penetrations and other construction cavities. It expands into irregular voids to help reduce draughts and provide insulation. Trim cured foam to finish the opening and...
- From $20.00
- From $20.00
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MapePUR Universal Foam M/GVendor:
MapePUR Universal Foam M/G is a self-expanding polyurethane foam for filling and insulating suitable gaps in building work. When a door frame has been fitted or a service passes through a wall, irregular voids can remain that are difficult to fill neatly with rigid...- From $16.33
- From $16.33
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Frequently Asked Questions
What sealant do I use for a movement joint?
Use a polyurethane sealant for most concrete and masonry movement joints. It stretches and recovers with the joint. Silicone suits glass, aluminium, or wet areas where PU is not compatible. Match the sealant to the substrate and movement before you buy.
What backing rod do I put behind a sealant joint?
Put a foam backing rod in the joint before sealant. Closed-cell foam repels water and suits buried or wet joints. Open-cell foam suits dry internal joints. The rod sets sealant depth and stops it sticking to the back of the joint.
How deep should the sealant go in a movement joint?
Fill the joint to about half its width. A 20 mm joint takes 10 mm of sealant over the backing rod. Too deep and it tears when the joint moves. Too shallow and it splits on top. Check the data sheet for the ratio.
Can I use the same sealant for a construction and a movement joint?
Not always. A construction joint is where new concrete meets old or two pours meet. It needs a sealant that bonds to both faces. A movement joint moves and needs a sealant that stretches. Match the sealant to the joint.
Do I need a fire-rated backing or sealant?
Use fire-rated backing or sealant where the joint passes through a fire-rated wall or floor. Standard foam and sealant will not hold the fire rating. Fireban One and fire-rated backing rods carry that rating here. Check the fire rating you need first.
What do I do before I seal a construction joint?
Make the joint clean, dry, and sound. Remove dust, laitance, oil, and loose material. Check the width and depth so you order enough sealant and the right rod. If the joint is still curing or leaking, fix that first. Sealant won't fix unready joints.